2022年5月1日 · We present validated models of 25 TMS coils for electric field simulations. Models are based on measurements, avoiding use of ambiguous technical coil descriptions. Peak field strength and motor threshold are poorly related to depth and focality. Field strength is more sensitive to details of coil design than depth and focality.

To explore the field characteristics and design tradeoffs of coils for deep transcranial magnetic stimulation (dTMS). We simulated parametrically two dTMS coil designs on a spherical head model using the finite element method, and compare them with ...

2023年4月7日 · Transcranial magnetic stimulation (TMS) is a procedure that uses magnetic fields to stimulate nerve cells in the brain to improve symptoms of major depression. It's called a "noninvasive" procedure because it's done without using surgery or cutting the skin.

2008年1月24日 · The simplest transcranial magnetic stimulation (TMS) coil is a circular one. The induced current is maximum near the outer edge of the coil while the magnetic field is the maximum under the center of the coil. TMS coils have good penetration to the cerebral cortex.

2014年6月1日 · We simulated parametrically two dTMS coil designs on a spherical head model using the finite element method, and compare them with five commercial TMS coils, including two that are FDA approved for the treatment of depression (ferromagnetic-core figure-8 and H1 coil).

2021年12月15日 · In this article, we introduce TMS using a figure-eight coil and structural variations of figure-eight coil, as well as other coil configurations for surface and deep brain stimulation. We discuss the advantages and limitations of these coil configurations, focusing on the focality, tradeoff between depth and focality, and approaches for ...

2016年12月29日 · In TMS, a time varying magnetic field generated from an electromagnetic coil placed on the scalp is used to induce an electric field inside the brain. TMS coil geometry plays an important role in determining the focality and depth of penetration of the induced electric field responsible for stimulation.

To perform an accurate comparison of 25 commercial TMS coils from four manufacturers, we reconstructed models directly from measurements of their electromagnetic fields and pulse waveforms. We used these models for comparisons of the maximum electric field induced in the cortex, estimated motor threshold, stimulation depth, and focality.

The design of TMS coils determines the electric field pattern that is induced in the brain. Depending on the stimulation target, designs with various degrees of focality and field penetration depth could be desirable.

Abstract: This paper is aimed to determine the optimal direction of Transcranial magnetic stimulation (TMS) coil using computer simulation. We used T1-weighted structural MR and diffusion tensor images of a healthy subject to construct a realistic anisotropic head model.